wondered > marvelled at Argo > (A ship of 50 oars, commissioned by Jason for his quest and named after its builder, Argus) venturous > [that] bold; [that] adventurous piece > piece of work, masterpiece; hence: daring exploit
9 First through the Euxine seas bore all the flower of Greece.
Euxine seas > Euxinus, Black Sea the flower of Greece > (Jason was accompanied by more than 50 of the greatest heroes of Greece: Hercules, Theseus, Castor and Pollux, etc.)
212.45
Ye might haue seene the frothy billowes fry
2 Vnder the ship, as thorough them she went,
That seemd the waues were into yuory,
4 Or yuory into the waues were sent;
And other where the snowy substaunce sprent
6 With vermell, like the boyes bloud therein shed,
A piteous spectacle did represent,
8 And otherwhiles with gold besprinkeled;
Yt seemd th'enchaunted flame, which did Cre{u"}sa wed.
1 You might have seen the frothy billows fry
fry > seethe, foam
2 Under the ship, as through them she went, 3 That seemed the waves were into ivory,
That > [So that it]
4 Or ivory into the waves were sent;